Current Drug Resistance News and Events

Current Drug Resistance News and Events, Drug Resistance News Articles.
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Mouse study shows bacteriophage therapy could fight drug-resistant Klebsiella pneumoniae
Using viruses instead of antibiotics to tame troublesome drug-resistant bacteria is a promising strategy, known as bacteriophage or ''phage therapy.'' Scientists at the National Institutes of Health have used two different bacteriophage viruses individually and then together to successfully treat research mice infected with multidrug-resistant Klebsiella pneumoniae sequence type 258 (ST258). (2021-02-23)

Targeted delivery of highly toxic anti-cancer drug to brain tumors
University of Houston biomedical researcher Sheeren Majd is reporting the development and testing of a new nano-carrier as a potential treatment to deliver highly toxic medicine to glioblastomas, the most common and aggressive form of primary brain tumors. (2021-02-23)

Antibiotic tolerance study paves way for new treatments
The study in mice, 'A Multifaceted Cellular Damage Repair and Prevention Pathway Promotes High Level Tolerance to Beta-lactam Antibiotics,' published Feb. 3 in the journal EMBO Reports, reveals how tolerance occurs, thanks to a system that mitigates iron toxicity in bacteria that have been exposed to penicillin. (2021-02-22)

Direct cloning method CAPTUREs novel microbial natural products
Microorganisms possess natural product biosynthetic gene clusters (BGCs) that may harbor unique bioactivities for use in drug development and agricultural applications. However, many uncharacterized microbial BGCs remain inaccessible. Researchers at Illinois previously demonstrated a technique using transcription factor decoys to activate large, silent BGCs in bacteria to aid in natural product discovery. (2021-02-19)

Metabolic mutations help bacteria resist drug treatment
MIT researchers have identified a new class of mutations that help bacteria develop antibiotic resistance. In a study of E. coli, they discovered that mutations to genes involved in metabolism can help bacteria to evade the toxic effects of several different antibiotics. (2021-02-18)

Chatter between cell populations drives progression of gastrointestinal tumors
Researchers at University of California San Diego School of Medicine identified new therapeutic targets for gastrointestinal stromal tumors (GISTs) that could lead to new treatment options for patients. (2021-02-18)

Antibiotic could be repurposed and added to tuberculosis treatment arsenal
Research has found fidaxomicin, an antibiotic usually used to treat bowel infections, prevents growth of resistant strains of Mycobacterium tuberculosis (MTb) in the lab. (2021-02-17)

SuperAger brains resist protein tangles that lead to Alzheimer's
A new study showed cognitive SuperAgers have resistance to the development of fibrous tangles in a brain region related to memory and which are known to be markers of Alzheimer's disease. Their resistance appears to help protect their memory. (2021-02-17)

Hospital wastewater favors multi-resistant bacteria
Scientists from the University of Gothenburg, Sweden presents evidence that hospital wastewater, containing elevated levels of antibiotics, rapidly kills antibiotic-sensitive bacteria, while multi-resistant bacteria continue to grow. Hospital sewers may therefore provide conditions that promote the evolution of new forms of antibiotic resistance. (2021-02-16)

Researchers solve riddle of plant immune system
How do plants build resilience? An international research team led by the University of Göttingen studied the molecular mechanisms of the plant immune system. They were able to show a connection between a relatively unknown gene and resistance to pathogens. The results of the study were published in the journal The Plant Cell. (2021-02-16)

Nursing home staff responses to pandemic reveal resilience, shortcomings: Concordia study
Writing in the Journal of Comparative Policy Analysis: Research and Practice, PhD student Daniel Dickson, his supervisor Patrik Marier, professor of political science, and co-author Robert Henry Cox of the University of South Carolina perform a comparative analysis of nursing home workers' experiences. In it, they look at Quebec (including those at government-run CHSLDs), British Columbia, Washington State and Ohio by reviewing 336 articles in six newspapers published between late-February and mid-June 2020. (2021-02-16)

Moffitt uses mathematical modeling to identify factors that determine adaptive therapy success
In a new article featured on this month's cover of Cancer Research, Moffitt Cancer Center researchers, in collaboration with Oxford University, report results from their study using mathematical modeling to show that cell turnover impacts drug resistance and is an important factor that governs the success of adaptive therapy. (2021-02-15)

Oncotarget: AKT isoforms have discrete expression in triple negative breast cancers
Oncotarget recently published ''AKT isoforms have discrete expression in triple negative breast cancers and roles in cisplatin sensitivity'' which reported that the authors investigated the expression and net effect of the individual isoforms in triple negative breast cancers and response to cisplatin treatment using cellular, mice models and clinical samples. (2021-02-15)

Campylobacter strains exchange genes, can become more virulent and antibiotic resistant
Campylobacter bacteria persist throughout poultry production, and two of the most common strains are exchanging genetic material, which could result in more antibiotic-resistant and infectious Campylobacter strains. (2021-02-15)

Exercise now proven to have mental health benefits for prostate cancer
New Edith Cowan University (ECU) research has found that exercise not only has physical benefits for men with prostate cancer, it also helps reduce symptoms of depression and anxiety. (2021-02-15)

Melanoma patients respond to immunotherapy after changes to gut microbiome
Statistical modeling developed by Oregon State University researchers has confirmed that changes to melanoma patients' gut microbiome led them to respond to a type of treatment capable of providing long-term benefit. (2021-02-14)

RUDN University veterinarians tested a new drug against pneumonia in calves
Respiratory tract diseases in young animals of the cattle are a big issue for world agriculture and food safety because a bacterium that causes them is resistant to most antibiotics. A team of veterinarians from RUDN University developed and tested a complex preparation called gentaminoseleferon that could help treat respiratory infection in calves. (2021-02-10)

New weapon against resistant bacteria
Researchers have developed a new antibiotic that can help in the fight against resistant bacteria, and they hope it will reach the patients. (2021-02-10)

Brain tumor study reveals surprising gene deletion and method to overcome drug resistance
Experts at Cincinnati Children's report success at averting drug resistance in a subtype of brain tumors called glioblastomas. Importantly, the research indicates that the approach may also work in other cancers, such as melanoma, that exhibit a similar pathway of drug resistance. (2021-02-10)

Researchers develop platform to identify cancer mutations that may be responsive to drug therapies
A Cleveland Clinic-led team of researchers has developed a personalized genomic medicine platform that will help advance accelerate genomic medicine research and genome-informed drug discovery, according to new study results published recently in Genome Biology. (2021-02-08)

Beyond secretion of insulin,the novel function of β cell in regulating glucose homeostasis
In a new study published in Journal of Extracellular Vesicles, Chen-Yu Zhang's group and Antonio Vidal-Puig's group at University of Cambridge report that pancreatic β cells secrete miR-29 family members (miR-29a, miR-29b and miR-29c) in response to high levels of free fatty acids (FFAs). These β cell-derived miR-29s are delivered to the liver, promoting insulin resistance and enhancing hepatic glucose output. (2021-02-07)

CDDEP's report 'The State of the World's Antibiotics' highlights the growing threat of AMR
Researchers at CDDEP have released, The State of the World's Antibiotics in 2021, which presents extensive data on global antimicrobial use and resistance as well as drivers and correlates of antimicrobial resistance, based on CDDEP's extensive research and data collection through ResistanceMap (www.resistancemap.org), a global repository that has been widely used by researchers, policymakers, and the media. (2021-02-03)

Intensity not paramount for physical training during cancer therapy
People receiving treatment for cancer are known to feel better with physical training. But does it make any difference how vigorously they exercise? A new study by researchers at Uppsala University shows that whether the training is intensive or rather less strenuous, its effect is roughly the same. The results are published in the journal Scandinavian Journal of Medicine and Science in Sports. (2021-02-03)

BU researchers identify promising therapeutic agent against melanoma
There have been great advances in treating melanoma over the past five years, however, even with these treatments many patients quickly develop drug resistance and die from their disease. A new study from Boston University School of Medicine (BUSM) has discovered that a drug (YK-4-279) that was previously created to target one specific type of protein has much broader use against a family of proteins that act to promote melanoma. (2021-02-01)

Oncotarget: Simvastatin is a potential candidate drug in ovarian clear cell carcinomas
''Simvastatin efficiently controlled OCCC proliferation and migration, thus showing potential as a candidate drug for the treatment of OCCC.'' (2021-02-01)

Novel therapy-resistance mechanism promoting the growth of breast cancer brain metastasis
SORLA is a protein trafficking receptor that has been mainly studied in neurons, but it also plays a role in cancer cells. Professor Johanna Ivaska's research group at Turku Bioscience observed that SORLA functionally contributes to the most reported therapy-resistant mechanism by which the cell-surface receptor HER3 counteracts HER2 targeting therapy in HER2-positive cancers. Removing SORLA from cancer cells sensitized anti-HER2 resistant breast cancer brain metastasis to targeted therapy. (2021-01-29)

How is human behavior impacting wildlife movement?
For species to survive in the wild, maintaining connectivity between populations is critical. Without 'wildlife corridors', groups of animals are isolated and may die out. In assessing wildlife connectivity, many aspects of the landscape are measured, but the impact of human behaviour has largely been overlooked. Now, an international team led by the University of Göttingen and Humboldt University Berlin, introduce the concept of 'anthropogenic resistance'. Their perspective article was published in the journal One Earth. (2021-01-29)

Drugs used to treat HIV and flu can have detrimental impact on crops
Scientists from the UK and Kenya found that lettuce plants exposed to a higher concentration of four commonly-used antiviral and antiretroviral medicines could be more than a third smaller in biomass than those grown in a drug-free environment. (2021-01-28)

Nanoparticle drug delivery technique shows promise for treating pancreatic cancer
Veterans Affairs researchers have designed a new way to deliver pancreatic cancer drugs that could make fighting the disease much easier. (2021-01-28)

Gut microbiota reveals whether drug therapies work in inflammatory bowel diseases
A study recently completed at the University of Helsinki indicates that the gut microbiota of patients suffering from inflammatory gastrointestinal disorders can be used to predict whether they will benefit from expensive therapies. The study also confirms the key role of therapies that have a beneficial effect on the gut microbiota in inflammatory bowel diseases. (2021-01-26)

Oncotarget: Drug-resistant cells grow exponentially in metastatic prostate cancer
The Oncotarget authors show that the drug-resistant, metastasis-causing cells are capable of producing drug-resistant, exponentially growing tumors, responsible for tumor growth as a patient receives different treatments (2021-01-25)

Epilepsy research focused on astrocytes
A significant number of epilepsy patients does not respond to currently available drugs. A collaboration between researchers in Japan and at the Heinrich Heine University Düsseldorf (HHU) now addressed a cell type in the brain that has so far not received much attention in epilepsy therapy. In the current edition of the Journal of Neuroscience, they describe that astrocytes might be a potential new target to better treat this disease. (2021-01-25)

In preclinical models, antiviral better inhibits COVID-19 than Remdesivir; further studies warranted
Working in preclinical models, researchers report that plitidepsin, a drug with limited clinical approval for the treatment of multiple myeloma, is more potent against SARS-CoV-2 than remdesivir, an antiviral that received FDA emergency use authorization for the treatment of COVID-19 in 2020. (2021-01-25)

Bioorthogonally catalyzed lethality strategy generates targeting drugs within tumor
Selectively killing tumor while not causing damage to normal cells still remains a challenge in cancer chemotherapy. Professor Hongke Liu from Nanjing Normal University together with Professor Jing Zhao and Professor Zijian Guo from Nanjing University developed a novel strategy---bioorthogonally-catalyzed lethality to generate efficient anticancer species between two non-toxic components only within cancer cells and tumors without external catalysts, realizing the precise and efficient anticancer chemotherapy. (2021-01-25)

Potential combined drug therapy for lung cancer
Researchers at Kanazawa University report in Clinical Cancer Research that in the most common type of lung cancer, certain secondary mutations occurring with another gene alteration known as ALK make the efficacy of alectinib, an otherwise commonly used drug for treating lung cancer, become unfavorable. Combining alectinib with another kind of drug can overcome this adverse effect, however. (2021-01-22)

University of Cincinnati research unveils possible new combo therapy for head and neck cancer
Researchers at the University of Cincinnati have tested a new combination therapy in animal models to see if they could find a way to make an already effective treatment even better. Since they're using a Food and Drug Administration-approved drug to do it, this could help people sooner than later. (2021-01-22)

Antibiotic resistance may spread even more easily than expected
Pathogenic bacteria in humans are developing resistance to antibiotics much faster than expected. Now, computational research at Chalmers University of Technology, Sweden, shows that one reason could be significant genetic transfer between bacteria in our ecosystems and to humans. This work has also led to new tools for resistance researchers. (2021-01-21)

Personalizing cancer care with improved tumor models
While decades of research have resulted in substantial improvements in surviving cancer, a key challenge remains in identifying new drugs that improve outcomes for patients. In APL Bioengineering, researchers suggest a major hurdle is the paucity of models for cancer research that accurately represent patient tumors. They provide a perspective on strategies using models from individual patients and where the field needs to go in terms of research in animal systems and in culture systems. (2021-01-21)

Researchers uncover potentially promising therapeutic combination for renal cell carcinoma
Investigators have demonstrated that ACE2 expression is a good prognostic factor in RCC, that loss of ACE2 mediates resistance to classical treatments, and that in preclinical models, treatment with a drug that is downstream of ACE2 can improve tumor responses in RCC and significantly prolong survival. (2021-01-20)

Unlocking 'the shape of water' in mechanisms of antibiotic resistance
Researchers captured and comparted hi-res images of ribosome structures from sensitive and resistant bacteria and report that a water molecule needed for antibiotic binding was not present in the ribosomes from the drug-resistant bugs. (2021-01-19)

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