Five previously undescribed specialized metabolites, including three 9,11-seco-pimarane diterpenoids, nodulisporenones A-C, and two androstane steroids, nodulisporisterones A and B, together with previously described ergosterol derivatives, dankasterone A and demethylincisterol A, were isolated from solid cultures of the endophytic fungus Nodulisporium sp. SC-J597. Their structures including absolute configurations were elucidated by extensive spectroscopic analysis and theoretical calculations of electronic circular dichroism spectra. Among them, nodulisporenones A and B are the first examples of seco-pimarane diterpenoids that is cyclized to form an unprecedented diterpenoid lactone scaffold and nodulisporisterones A and B represent the first normal C androstane steroids of fungal origin. Nodulisporisterone B exhibited potent inhibitory effect on the production of NO in LPS-stimulated RAW264.7 macrophages (IC = 2.95 μM). This compound, together with the two known ergosterol derivatives, also displayed cytotoxicity against A549, HeLa, HepG2 and MCF-7 cancer cell lines with IC values of 5.2-16.9 μM.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.phytochem.2023.113679 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cost-effectiveness of budesonide-formoterol in maintenance therapy of asthma patients.
Rev Alerg Mex
December 2024
Master's in economics, HS Pharmacoeconomic Research, Mexico City, Mexico.
Objective: to perform a cost-effectiveness analysis of asthma treatment with budesonide/formoterol against other treatment options used at Mexico's National Institute for Respiratory Diseases.
Methods: A complete economic evaluation of cost-effectiveness from a public health perspective, comparing the use of budesonide/formoterol as maintenance therapy with fluticasone/vilanterol in 103 female asthma patients managed at INER between 2015 and 2021.
Results: Average cost per patient was $743.
Basic Science and Pathogenesis.
Alzheimers Dement
December 2024
University of California, San Diego, La Jolla, CA, USA.
Background: According to data from the Alzheimer's Association, more than two-thirds of patients living with Alzheimer's disease (AD) in the United States are women. The interplay between aging and hormone depletion during menopause has been proposed as a leading cause, but the molecular underpinnings of this vulnerability are not fully understood. On the one hand, approaches that seek to supplement estrogens to rescue pre-menopausal hormonal levels have had contradictory outcomes in clinical trials.
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Texas A&M University, College Station, TX, USA.
Background: Older females, particularly susceptible to Alzheimer's disease (AD), may be affected by hormonal fluctuation during life. We aim to investigate the relationship between changes in brain volume and sex steroid hormones over time. We hypothesize that levels of sex hormones (17ß-estradiol, progesterone, and testosterone) relate to changes in brain volume, especially in the hippocampus (HPC) and cerebellum (CB).
View Article and Find Full Text PDFBasic Science and Pathogenesis.
Alzheimers Dement
December 2024
Vanderbilt Genetics Institute, Vanderbilt University Medical Center, Nashville, TN, USA.
Background: Cerebrovascular pathology frequently co-occurs with Alzheimer's disease (AD) pathology and the combinations of these forms of pathology may underly AD dementia. Sex hormones influence many aspects of cerebrovascular systems and may contribute to cerebrovascular pathology, but many studies of aging and AD do not measure hormones. Therefore, in this study, we explored whether a polygenic score predicting sex hormone levels relates to cerebrovascular pathology in the AD brain.
View Article and Find Full Text PDFThe effect of coadministration of vitamin D and tramadol on serum kisspeptin, testosterone, oxidative stress levels and testicular histology in Wistar rats: a preliminary report.
Rev Int Androl
December 2024
Department of Human Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Nnamdi Azikiwe University, Nnewi Campus, P.O. Box 5001, 435101 Nnewi, AN, Nigeria.
Background: Tramadol, an opioid analgesic, is known to induce testicular damage and impair reproductive parameters. Vitamin D3, recognized for its antioxidant and protective properties, might offer a potential protective effect against tramadol-induced testicular damage. This study observed the effects of co-administration of vitamin D3 and tramadol on serum kisspeptin levels, testicular histology, semen parameters, testosterone levels, and oxidative stress markers in male rats.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!