Natural products are leads for new antibiotics as a result of their structural complexity and diversity. We have isolated a series of structurally related polyketide-derived natural products from Streptomyces venezuelae ISP5230. The most active of these jadomycin analogues showed good activity against a variety of staphylococci, including methicillin-resistant Staphylococcus aureus.
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http://dx.doi.org/10.1128/AAC.00801-08 | DOI Listing |
JAMA Netw Open
January 2025
Transformative Health Systems Research to Improve Veteran Equity and Independence Center of Innovation, Veterans Affairs Providence Health Care System, Providence, Rhode Island.
Importance: Influenza vaccination remains the most important intervention to prevent influenza morbidity and mortality among nursing home residents. The additional effectiveness of recombinant influenza vaccine vs standard dose vaccines was demonstrated in outpatient older adults but has not been evaluated in nursing home populations.
Objective: To compare hospitalization rates among residents in nursing homes immunized with a recombinant vs a standard dose egg-based influenza vaccine.
The present-day treatment for advanced osteoarthritis is joint replacement. However, modern nonsurgical treatments have been used as a first-line option to delay or avoid arthroplasty, especially if treatments are started when osteoarthritis is moderate. Among many nonsurgical options, there has been an increased interest recently in the use of orthobiologics.
View Article and Find Full Text PDFAm J Manag Care
December 2024
Department of Health Outcomes Research and Policy, Auburn University Harrison College of Pharmacy, 4306D Walker Building, Auburn University, Auburn, AL 36849-5506. Email:
Objectives: This study evaluated the uptake and costs of 3 biosimilars among Medicare and Medicaid populations for 2019 to 2022: rituximab-abbs (Truxima), rituximab-pvvr (Ruxience), and rituximab-arrx (Riabni).
Study Design: A retrospective, descriptive study.
Methods: Using the annually aggregated, product-level utilization and cost data of biologic and biosimilar rituximab products from CMS drug spending data, total claims and costs (reimbursement and out of pocket) for all rituximab products were identified and extracted from Medicare Part B, Medicare Part D, and Medicaid.
Vet Med Sci
January 2025
Department of Medical Pharmacology, Faculty of Medicine, Ataturk University, Erzurum, Turkey.
The present study aimed to unveil the gastroprotective potential of Vaccinium macrocarpon (VM) extract and its mechanism of action against indomethacin (INDO)-induced gastric ulcers in rats. To achieve this goal, rats were pretreated with either omeprazole (20 mg/kg) or VM (100 mg/kg) orally for 14 consecutive days. Gastric tissue samples were collected and various parameters were evaluated to understand the mechanism of VM's action, including the levels of superoxide dismutase, malondialdehyde, glutathione, CAT and transforming growth factor beta (TGF-β), as well as the mRNA expression levels of tumour necrosis factor alpha, interleukin 1 beta, nuclear factor kappa B (NF-κB) and inhibitor kappa B (IκB).
View Article and Find Full Text PDFThe development of new protocols for stereospecific and stereoselective halogenation transformations by mild reaction conditions is a highly desirable research target for the chemical and pharmaceutical industries. Following the straightforward methodology for directly transforming a wide scope of alcohols to alkyl bromides and chlorides using substoichiometric amounts of thioureas and N-halo succinimides (NXS) as a halogen source in a single step, we noticed that in apolar solvents bromination of chiral secondary alcohols did not produce the expected racemates. In this study, the stereochemical aspects of the bromination reaction were examined.
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