Articles tagged with Chemical Resistance
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Researchers at the University of Illinois have identified a single major gene controlling waterhemp's resistance to S-metolachlor, a widely used soil-applied herbicide. This finding poses a significant challenge for farmers, as it increases the risk of spread and limits effective weed management options.
The global antibiotic resistance of Pseudomonas aeruginosa has decreased, with a significant drop in resistance to all tested antibiotics. However, a hypervirulent strain, ST235, has increased in prevalence, causing more aggressive infections and associated with high mortality rates.
A new Australian study suggests harnessing genomic surveillance technology can detect the rise of deadly 'superbugs', slowing their evolution and spread to improve global health outcomes. The study highlights the need for a multifaceted 'One Health' approach to surveillance, with practical recommendations for implementation.
Researchers found that tumour cells escape immunotherapy by losing or changing BCMA and GPRC5D targets on their surface. This understanding has led to the suggestion of periodically profiling myeloma cells throughout a patient's treatment course to adapt treatment strategies.
Researchers discovered that lactate-producing intratumoral bacteria drives resistance to radiation therapy. Cancer cells respond to radiation by rewiring metabolic signaling pathways using lactic acid instead of glucose.
Researchers at MedUni Vienna discovered that dormant tumor cells surviving chemotherapy can be targeted through the inhibition of P-glycoprotein, opening new possibilities for delaying relapse. This breakthrough could represent a step forward in treating aggressive triple-negative breast cancer, which has limited treatment options and ...
Researchers from MedUni Vienna developed a new approach to fighting resistant cell lines in small cell lung cancer by combining two already available therapeutic agents. The study reveals the molecular mechanism underlying therapy resistance and provides a promising basis for research into successful new therapies.
Researchers developed a novel material that self-assembles into micelle structures targeting cancer cell lysosomes, specifically interacting with Cathepsin B. This leads to dysfunctional lysosomes and apoptotic death of cancer cells. The technology promises a new approach to combat drug resistance in cancer treatment.
Researchers found that DPP4 inhibition increased sunitinib efficacy in RCC spheroids and upregulated DPP4 in sunitinib-resistant cells. This suggests potential repurposing of DPP4 inhibitors to target therapy resistance in renal cell carcinoma.
Researchers developed a reliable and reproducible real-time live tissue sensitivity assay (RT-LTSA) using fresh tumor samples to predict patients' clinical response to chemotherapy. The study showed improved disease-free survival and reduced recurrence rates in patients who received RT-LTSA sensitive adjuvant regimens.
Researchers developed a personalized combination treatment that turned on an immunometabolic switch to effectively control aggressive prostate cancer. The treatment showed complete tumor control and long-lasting survival without side effects in a mouse model of advanced prostate cancer.
Researchers found a strong positive correlation between BRD4 overexpression and chemoresistance in ovarian cancer. The study demonstrated that BRD4-L and BRD4-S isoforms play a role in promoting chemotherapy resistance in high-grade serous ovarian carcinoma.
A team of Chinese and UK researchers has identified superoxide dismutase 1 (SOD1) as a potential target for reversing drug resistance in ovarian cancer. By using nanoparticles to deliver siRNA that reduces SOD1 levels, the study showed reduced growth and decreased resistance to cisplatin in female mice.
Researchers create a nanocapsulation strategy to solubilize insoluble aromatic polymers in water, enhancing their processing and development. The approach uses bent aromatic amphiphiles to form micelle-like nanocapsules that encapsulate hydrophobic molecules.
Researchers discovered a way to strengthen polymers by introducing weaker bonds, increasing resistance to tearing up to tenfold. The approach doesn't alter other physical properties and can be used to improve the toughness of other materials like rubber.
The study found that drug-resistant Leishmania parasites have distinct protein production profiles compared to sensitive parasites, suggesting a global reprogramming of protein synthesis. This pre-emptive adaptation enables the parasite to quickly respond to the presence of the drug and survive when it is absent.
A study by Martin-Luther-University Halle-Wittenberg found a link between high levels of IGF2BP2 and faster-growing bowel cancer tumours with chemotherapy resistance. The protein's role in cell growth and metabolism may lead to the development of new diagnostic procedures and therapeutic strategies.
A study has identified a potential treatment target for prostate cancer that is resistant to hormone therapy, a protein modification involving TRAF4. The researchers found that TRAF4 promotes the spread of cancer and may be associated with a new treatment option for patients.
Researchers discuss chemotherapeutic resistance in recurring ovarian cancer, focusing on the unfolded protein response and its effect on polyploid giant cancer cells. Understanding this mechanism could lead to investigating cancer cell molecular mechanisms and potential therapeutic strategies.
Cancer-associated fibroblasts (CAFs) are a type of cell that plays a crucial role in the tumor microenvironment. The authors suggest that understanding CAFs is essential for developing effective cancer therapies. Research targeting CAFs has shown promise, but challenges remain due to their complex nature.
Researchers propose conjugating a cell-penetrating peptide to oxaliplatin to overcome chemotherapy resistance in colorectal cancer. The new approach reduces platinum accumulation in tumour microenvironment and healthy tissues.
Researchers created a three-dimensional structure that mimics bone and houses osteosarcoma cells beside immune cells, finding increased inflammation reduces chemotherapy effectiveness. The study highlights the importance of the tumor microenvironment in disease progression and treatment.
A new review paper suggests that selective protection of normal cells from chemotherapy could increase the therapeutic window and improve outcomes for cancer patients. The authors propose using antagonistic drug combinations to kill drug-resistant cancer cells, reducing side effects and improving quality of life.
Tumour cells exhibit an innate randomness in their ability to respond to chemotherapy, which can lead to resistance. Researchers identified a marker for resistance and propose combining chemotherapy with drugs targeting this 'noise' to improve treatment outcomes.
A study published in Nature Communications reveals that platinum accumulates in healthy cells surrounding cancer cells, particularly fibroblasts, and induces gene activation associated with poor response to chemotherapy. Periostin levels serve as a marker of TGF-β activity in fibroblasts and predict treatment benefit.
A potent plant toxin called albicidin has emerged as a strong new antibiotic candidate, effective in small concentrations and highly potent against pathogenic bacteria. Its unique mechanism targets the bacterial enzyme DNA gyrase, which is essential for cell function.
Researchers at Aston University have created the world's first computer reconstruction of a virus, including its complete native genome. This breakthrough could lead to the development of targeted treatments to kill bacteria that are dangerous to humans, reducing the threat of antibiotic resistance.
A new prostate cancer therapy is being tested in clinical trials, targeting the treatment-resistant form of the disease. The therapy uses a drug called Abivertinib to block a specific protein that allows tumors to produce androgens, a goal of using more targeted treatments like TKIs.
A new project aims to develop a method for producing antimicrobial peptides, which have shown promise in overcoming antibiotic resistance. The peptides' ability to delay microbial resistance development makes them an attractive alternative to conventional antibiotics.
Researchers at Goethe University Frankfurt found that dying colon cancer cells release ATP to neighboring tumor cells, activating a survival signaling pathway. Interrupting this communication can significantly increase the effectiveness of chemotherapy against resistant tumors.
Researchers discover chemical inhibitor TIS108 significantly lowers Striga infestation without affecting plant growth or grain yield. The study shows canonical strigolactones contribute to seed germination in root parasitic weeds and play a major role in stimulating invasion by Striga.
A study reveals that interleukin 34 (IL-34) modulates the balance between two myeloid-derived suppressor cell populations, leading to immunosuppression and chemoresistance in triple-negative breast cancer. Neutralizing IL-34 with a drug reduces tumor growth and susceptibility to chemotherapy.
Researchers at UNIGE have discovered a way to overcome resistance to chemotherapy in colorectal cancer, using an optimized combination of tyrosine kinase inhibitors. This breakthrough opens up new avenues for developing targeted therapies that can effectively treat patients with low five-year survival rates.
Cancer cells become resistant to chemotherapies by slowing down DNA replication forks, allowing them to avoid collisions with chemotherapy drugs. A kinase called DNA-PKcs acts as a sensor when a fork is stressed and promotes slowing of the fork and chemo-resistance.
Scientists found that weedy rice has developed herbicide resistance through gene flow from crop rice, with most fields showing resistant plants within 20 years of herbicide-resistant rice cultivation. This rapid evolution is due to the close proximity of weedy and crop rice in the same fields, allowing for pollen transfer and outcrossing.
Herbicide companies are shifting their research focus to address growing resistance, using AI, X-ray crystallography, and computer simulations to predict target enzymes and inhibit herbicides. This could lead to new commercial products, but experts caution farmers to moderate use and consider additional crop protection tools.
A Phase 3 clinical trial is investigating the effectiveness of a combination of two immunotherapy drugs, nemvaluekin alfa and pembrolizumab, compared to standard chemotherapy for patients with platinum-resistant ovarian cancer. The trial aims to provide a novel treatment option with better efficacy and safety profiles.
Researchers at UC Riverside have found that common microbial communities can degrade a stubborn class of PFAS called fluorinated carboxylic acids (FCAs) by breaking the carbon-fluorine bond under anaerobic conditions. This breakthrough could lead to new methods for environmental remediation and reduce the harm caused by PFAS.
Researchers found that Australian native rushes, including Phragmites australis, can significantly remove PFAS chemicals from contaminated surface water. The study used floating wetlands as a mechanism for plants to grow hydroponically and showed a 42-53% removal of legacy PFAS contaminants.
Research finds that intestinal inflammation liberates chemicals that nourish E. coli's growth and promote inflammation, highlighting new treatment targets for Crohn's disease. The study identifies key compounds that feed E. coli, such as phospholipids and amino acids, and shows that these compounds can enhance the bacteria's virulence.
Researchers at Ohio State University discover that carbon black nanoparticles are fatal to yellow fever mosquito larvae in standing water. The material accumulates on the larvae's head, abdomen, and gut, blocking basic biological functions.
Research reveals that climate change and drought can cause significant yield losses in soybeans, even with high levels of weed control. To mitigate this, farmers need to adopt integrated weed management strategies, including the use of soil-residual herbicides and late-maturing soybean varieties.
A new study found that traditional Chinese medicine Shengmai Yin increases the sensitivity of cancer cells to radiation, reducing radioresistance. By altering DNA methylation status, SMY enhances the efficacy of radiation therapy and reduces side effects.
A study by University of Illinois researchers found that applying dicamba at the latest growth stage and using a safener can help minimize injury to sweet corn. The results suggest that dicamba could be used safely in sweet corn with proper application timing and formulation, offering practical guidance for farmers.
Researchers found that seed microorganisms have more staying power than soil microorganisms when colonizing plants. The study suggests that modifying the seed microbiome could lead to more sustainable agriculture and increased crop yields and quality.
Researchers have confirmed a Champaign County waterhemp population is resistant to dicamba, with a 65% control rate. The population shows signs of metabolic resistance, activating detoxification genes before the chemical can harm. This finding raises concerns about the potential for broader herbicide resistance.
Research identifies way of using nanoparticles to target and disrupt bacterial cells, making them more susceptible to standard antibiotic treatments. Laboratory studies show a strong effect in killing a range of bacteria, including some linked to hospital-acquired infections.
Researchers found that late-season weeds had a significant impact on corn yields, with minimal control resulting in an average loss of 50% and exacerbating crop losses under hot or dry conditions. The study suggests that climate change is not the only factor affecting corn yield, but rather its interaction with weeds.
Researchers identify gene regions responsible for non-target-site herbicide resistance in waterhemp, a key step towards early detection and management tools. By analyzing the genome of waterhemp, scientists have narrowed down the genetic regions controlling resistance to two areas, paving the way for further studies.
Researchers have identified the gene responsible for a male European corn borer moth's preference for its female counterpart's pheromone. The discovery provides insights into the evolution of mating signals and could help predict the spread of resistance to genetically modified insecticides, offering potential benefits for pest control.
Researchers from the University of Houston and Oregon State University have discovered that water-in-oil microemulsions formed by firefighting foam can retain high levels of PFAS in soil, making remediation difficult. This new understanding may help identify contamination sources and develop new clean-up methods.
Scientists have identified a group of chemicals present in ash leaves that could be used to look for susceptibility or resistance to ash dieback. The same compounds are also used by trees to deter herbivorous insects, raising concerns about unintended consequences.
A new study has identified 37 genes, including 10 new ones, that show resistance to stripe rust in spring wheat varieties. This discovery could lead to the development of more resistant varieties, reducing chemical application and damage to crops.
Scientists from the University of Edinburgh have made a groundbreaking discovery that fungal cells can develop drug resistance through epigenetic changes, without altering their DNA sequence. This finding has the potential to revolutionize the management of fungal infections in plants and humans.
Researchers have found that curium's outer electrons can be altered by shortening the distance between it and surrounding lighter atoms under high pressure. This discovery has potential applications in controlling chemical separation used in nuclear recycling and designing resilient materials for long-term storage of radioactive elements.
Researchers have identified five regions of the genome that show signs of selection for glyphosate resistance in morning glory, suggesting multiple ways the plant may evolve resistance. The study found evidence for both parallel and nonparallel genetic changes associated with glyphosate resistance.
Researchers create a new approach for efficiently fusing different polymers together, enabling the precise tuning of material properties by selecting appropriate base polymers and mixing ratios. The method involves using dynamic covalent bonds and TEMPS radicals to fuse cross-linked polymers (CPLs) together.
A new study has identified corn varieties with moderate resistance to bacterial leaf streak, a foliar disease that can cause up to 20% yield losses. The research also found genetic regions associated with increased levels of resistance and highlighted the importance of host resistance in controlling this disease.
Researchers have discovered that graphene-lined clothing could be an effective mosquito barrier. The ultra-thin yet strong material acts as a physical barrier that mosquitoes are unable to bite through, while also blocking chemical signals that trigger their urge to bite.
A team of Australia-UK researchers identified the molecular machinery used by bacteria to resist chemicals, which could be repurposed to produce precursors for new polymers like nylon. This discovery sheds light on how bacteria develop resistance and may lead to the development of new antimicrobial agents.