331,356 results match your criteria: "Drugs and Chemicals"
Expert Opin Pharmacother
December 2024
Department of Metabolic Medicine/Chemical Pathology Guy's & St Thomas' Hospitals, London, UK.
Introduction: Lipid-lowering therapies are well established for the treatment of cardiovascular disease (CVD). Historically monotherapy studies were performed but the introduction of statins has led to these drugs being recognized as baseline therapies and to the investigation of combination therapy of both older and newer medications with them.
Areas Covered: Surrogate marker studies have shown additive effects on LDL-C, triglycerides and HDL-C of combination therapies with statins and these have extended to lipoprotein (a).
Amyotroph Lateral Scler Frontotemporal Degener
December 2024
Department of Neurology, Duke University, Durham, NC, USA.
ALSUntangled reviews alternate and off-label treatments prompted by patient interest. Here, we review psilocybin, a chemical derived from mushrooms and belonging in the category of drugs known as psychedelics. Psilocybin has plausible mechanisms for slowing ALS progression because of its ability to cross the blood brain barrier and effect neurogenesis and inflammation.
View Article and Find Full Text PDFMol Biotechnol
December 2024
Department of Biotechnology, University of Mianwali, Punjab, 42200, Pakistan.
In Salmonella Typhimurium, efflux pump proteins, such as AcrD actively expel drugs and hazardous chemicals from bacterial cells, resulting in treatment failure and the emergence of antibiotic-resistant variants. Focusing on AcrD may lead to the development of novel antimicrobials against multidrug-resistant bacteria. However, challenges persist in achieving high selectivity, low toxicity, and effective bacterial penetration.
View Article and Find Full Text PDFPharmacol Res
December 2024
Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, Miaoli County 350401, Taiwan. Electronic address:
The large and rapid increase in the incidence and mortality of colorectal cancer (CRC) demonstrates the urgent need for new drugs with higher efficacy to treat CRC. However, the lack of applicable and reliable preclinical models significantly hinders the progress of drug development. Patient-derived xenograft (PDX) models are currently considered reliable in vivo preclinical models for predicting drug efficacy in cancer patients.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Jamil-ur-Rahman Center for Genome Research, Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi 75270, Pakistan. Electronic address:
In the current study, we presented the genome sequence and taxonomic classification of the new extensively drug-resistant (XDR) Salmonella enterica serovar Typhi strain JRCGR-ST-AK02. Its genome size was found to be 4,780,534 bp, containing 4864 genes. Taxonomic classification was performed based on the Average Nucleotide Identity (ANI), Genome-to-Genome Distance Calculator (GGDC) and Average Amino Acid Identity (AAI) analysis.
View Article and Find Full Text PDFInt J Pharm
December 2024
Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, Palermo, Italy; Istituto per la Ricerca e Innovazione Biomedica (IRIB), CNR, Via Ugo La Malfa, 153, 90146, Palermo, Italy. Electronic address:
Despite advancements in cancer treatments, therapies frequently exhibit high cytotoxicity, and surgery remains the predominant method for treating most solid tumors, often with limited success in preventing post-surgical recurrence. Implantable biomaterials, designed to release drugs at a localised site in response to specific stimuli, represent a promising approach for enhancing tumour therapy. In this study, a redox-responsive glutathione extended polyurethane urea (PolyCEGS) was used to produce paclitaxel (PTX) and gold nanorods (AuNRs) loaded electrospun membranes for combined redox/near-infrared (NIR) light-responsive release chemotherapy and hyperthermic effect.
View Article and Find Full Text PDFInt J Pharm
December 2024
Department of Chemical Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan.
Combination therapy using multiple drugs has the potential for synergistic therapeutic effects and reduction in the administered dose. Furthermore, when combined with a drug delivery system, the therapeutic agents can effectively be targeted and delivered to the affected area. Therefore, a single carrier capable of encapsulating multiple drugs is of clinical significance.
View Article and Find Full Text PDFMol Divers
December 2024
Department of Medicinal Chemistry, Faculty of Ayurveda, Institute of Medical Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India.
Prostate cancer (PC) is among the most prevalent cancers in males. It is the leading cause of death in men, in around 48 out of 185 countries. Increased androgen receptor (AR) activity is the key factor contributing to the development or progression of newly diagnosed cases of prostate cancer.
View Article and Find Full Text PDFMol Pharm
December 2024
School of Pharmacy, University of Nottingham, University Park, Nottingham NG7 2RD, United Kingdom.
Amorphous solid dispersions (ASDs) offer a well-recognized strategy to improve the effective solubility and, hence, bioavailability of poorly soluble drugs. In this study, we developed an extensive library of a significant number of solid dispersion formulations using a library of chemically diverse drugs combined with a water-soluble polymer (polyvinylpyrrolidone vinyl acetate, PVPVA) at different loadings. These formulations were printed as microarrays of solid dispersion formulations, utilizing minimal material amounts (nanograms).
View Article and Find Full Text PDFCell Mol Biol (Noisy-le-grand)
November 2024
Department of Biological and Chemical Engineering, Hongik University, Sejong 30016, Republic of Korea.
Despite the abundance of natural biological resources in Aronia melanocarpa, there is still insufficient research specifically exploring the potential for developing cosmeceutical compositions utilizing this plant. To develop the ingredient with the cosmeceutical function, the anti-wrinkle effect of the ethanol extract of A. melanocarpa was investigated.
View Article and Find Full Text PDFCell Mol Biol (Noisy-le-grand)
November 2024
The current study was designed to investigate the effect of A. indica (Neem) leaf extracts (ethanolic and aqueous) in yeast-induced pyrexia and acetic acid-induced writhing in rat models to evaluate the antipyretic and analgesic biomarkers and its phytochemical screening with computational analysis. For the antipyretic activity model 60 albino rats (160-200g) of either sex were divided into 4 groups and all groups were injected with yeast to induce pyrexia.
View Article and Find Full Text PDFChem Rec
December 2024
Department of Pharmacy, The Second Affiliated Hospital of Army Medical University, Chongqing, 400037, China.
The catalytic asymmetric allylation reaction involving allylboron species has emerged as a powerful tool to access highly stereoselective allylation products. In the early years, most of the researches focused on the reaction of unsubstituted allylboronates with ketones or imines. With the synthesis of complex substituted allylboronates, allylboronic acids and allyltrifluoroborates, the type of reactions and the variety of substrates are greatly expanded.
View Article and Find Full Text PDFSmall
December 2024
Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, 46556, USA.
Synthetic opioids, especially fentanyl and its analogs, have created an epidemic of abuse and significantly increased overdose deaths in the United States. Current detection methods have drawbacks in their sensitivity, scalability, and portability that limit field-based application to promote public health and safety. The need to detect trace amounts of fentanyl in complex mixtures with other drugs or interferents, and the continued emergence of new fentanyl analogs, further complicates detection.
View Article and Find Full Text PDFJ Cheminform
December 2024
College of Computer Science and Electronic Engineering, Hunan University, Changsha, 410082, Hunan, China.
Protein-protein interactions (PPIs) play a crucial role in numerous biochemical and biological processes. Although several structure-based molecular generative models have been developed, PPI interfaces and compounds targeting PPIs exhibit distinct physicochemical properties compared to traditional binding pockets and small-molecule drugs. As a result, generating compounds that effectively target PPIs, particularly by considering PPI complexes or interface hotspot residues, remains a significant challenge.
View Article and Find Full Text PDFJ Nanobiotechnology
December 2024
Henan Key Laboratory of Nanocomposite and Applications, Institute of Nanostructured Functional Materials, Huanghe Science and Technology College, Zhengzhou, 450006, Henan, China.
Inflammatory bowel disease (IBD) is a chronic gastrointestinal disease which is closely related with the overproduced reactive oxygen species (ROS), increased pro-inflammatory cytokines and disordered intestinal microbes. However, current therapeutic methods usually ignored the interrelation among the pathogenesis, and mainly focused on a single factor, inducing clinical outcomes unsatisfied. Herein, biocompatible infinite coordination polymers of drugs (Ce-SASP-RS ICPs) composed of Ce ions, FDA-approved drug sulfasalazine (SASP) and natural ingredient resistant starch (RS) were developed for synergistic treatment of IBD.
View Article and Find Full Text PDFBMC Med Res Methodol
December 2024
Center of Clinical Pharmacology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
Background: Liver injury from drug-drug interactions (DDIs), notably with anti-tuberculosis drugs such as isoniazid, poses a significant safety concern. Electronic medical records contain comprehensive clinical information and have gained increasing attention as a potential resource for DDI detection. However, a substantial portion of adverse drug reaction (ADR) information is hidden in unstructured narrative text, which has yet to be efficiently harnessed, thereby introducing bias into the research.
View Article and Find Full Text PDFNPJ Precis Oncol
December 2024
Department of Molecular Biosciences, The University of Kansas, Lawrence, KS, USA.
Triple-negative breast cancer (TNBC) presents therapeutic challenges due to limited targeted treatment options and resistance to chemotherapy drugs, such as doxorubicin. This study investigated doxorubicin resistance mechanisms and a strategy to overcome it. A doxorubicin-resistant cell subline (231-DR) was developed from MDA-MB-231 TNBC cells, and enhanced expression of cellular FLICE-inhibitory protein (cFLIP) in 231-DR cells was identified as a potential driver of the resistance.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Instituto de Biomedicina de Valencia (IBV), CSIC, Valencia 46010, Spain; Centro de Investigación Príncipe Felipe, Unidad Asociada a IBV, Valencia 46012, Spain. Electronic address:
The small molecule IGGi-11 targets Gαi subunits of heterotrimeric guanine nucleotide-binding proteins. Gα subunits are activated by G-protein-coupled receptors in response to extracellular stimuli by accelerating the exchange of GDP for GTP, but they are also activated by intracellular proteins like GIV, of which elevated levels correlate with increased cell migration and cancer metastasis. IGGi-11 disrupts the interaction of Gαi proteins with GIV and inhibits pro-invasive traits of metastatic breast cancer cells without interfering with GPCR signaling.
View Article and Find Full Text PDFInt J Pharm
December 2024
School of Pharmacy, Queen's University Belfast, Belfast, United Kingdom. Electronic address:
Diabetic retinopathy (DR) and age-related macular degeneration (AMD) are the primary causes of vision impairment and blindness worldwide. The current treatment for these diseases is an intravitreal injection of anti-VEGF agents, which are costly and require frequent injections. Implants can be used to sustain the release of drugs and minimize side effects.
View Article and Find Full Text PDFCell Chem Biol
December 2024
Department of Immunology and Microbiology, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China; Shenzhen Key Laboratory of Biomolecular Assembling and Regulation, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China. Electronic address:
Novel inhibitors of pyroptosis promise breakthroughs in treating inflammatory diseases and malignant tumors. In this issue of Cell Chemical Biology, Hu et al. identify two repurposed drugs that selectively target gasdermin D (GSDMD) oligomers, effectively suppressing pyroptosis while reducing off-target effects typical of cysteine-based inhibitors.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
December 2024
Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Key Laboratory of Chemo/Biosensing, Laboratory of Optical Probes and Bioelectrocatalysis (LOPAB), Anhui Province Key Laboratory of Biomedical Materials and Chemical Measurement, College of Chemistry and Materials Science, Anhui Normal University, Wuhu 241002, PR China. Electronic address:
Developing near-infrared fluorescent probes for simultaneous tracking of lipid droplets (LDs) and lysosomes is highly desirable for studying cell metabolism. In this work, deep-red/near-infrared dual-emission carbonized polymer dots (DN-CPDs) were prepared for ratiometric monitoring of the intracellular polarity. Detailed structural analysis revealed that the deep-red emission and near-infrared peak of DN-CPDs originate from the molecular state and surface state, respectively.
View Article and Find Full Text PDFBiomaterials
December 2024
School of Pharmacy, Key Laboratory of Smart Drug Delivery (Ministry of Education), Fudan University, Shanghai, 201203, China. Electronic address:
This study aimed to address the challenges associated with the low oral bioavailability and the necessity for frequent dosing of breviscapine (BRE), a mainstream drug in the treatment of cardiovascular and cerebrovascular diseases. The poor solubility and permeability of BRE in the gastrointestinal tract were identified as significant barriers to effective drug absorption, thereby impacting therapeutic efficacy and patient compliance. To enhance the gastrointestinal absorption of BRE, particles loaded with BRE were engineered utilizing Cremophor EL (CrEL), an absorption enhancer, in conjunction with mesoporous silica, a biocompatible drug delivery vector, formulating mesoporous silica particles loaded with BRE and CrEL (BRE-CrEL@SiO).
View Article and Find Full Text PDFJ Chromatogr B Analyt Technol Biomed Life Sci
December 2024
Institute of Food Safety, Chinese Academy of Inspection & Quarantine, Beijing 100176, China; Key Laboratory of Food Quality and Safety for State Market Regulation, Beijing 100176, China. Electronic address:
Functional foods that are illegally adulterated with chemical hypoglycemic drugs or their derivatives pose serious risks to human health. However, the detection of these compounds is a challenge due to the unknown nature of their structures, particularly as many of these compounds are newly synthesized and lack standardized references. In this study, we developed a non-targeted screening strategy for detecting illegally added hypoglycemic drugs and their derivatives in oral solution and hard capsule functional foods.
View Article and Find Full Text PDFJ Nat Prod
December 2024
Key Laboratory of Marine Drugs, Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266100, People's Republic of China.
A combined strategy of 2D-NMR-metabolomics-driven substructure tracking with genome mining led to the targeted discovery of 10 nocobactin-type lipopeptides (-) from the Arctic-derived phychrophillic sp. L-016, among which - are new compounds, named nocardimicins S-W. The phenoxazole moiety in -, featuring unique NMR values and correlations, was used as a probe for tracking nocardimicin analogues.
View Article and Find Full Text PDFJ Am Chem Soc
December 2024
College of Chemistry, Beijing Normal University, Beijing 100875, China.
The quantitative analysis of vesicular neurotransmitters in neurons in situ is paramount for investigating neurodegenerative disorders, such as Alzheimer's disease and Parkinson's disease (PD). Unfortunately, a direct approach for monitoring neurotransmitter chemistry in single vesicles in fresh brain tissue has remained inaccessible so far. Here, we introduce an innovative platform of single-vesicle electrochemistry (SVE) in fresh brain tissue, enabling the quantification of neurotransmitters at the single-vesicle level for both soma and varicosity.
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