(Z,Z')-Diligustilide (DLG) or levistolide A is a dimeric phthalide isolated from Ligusticum porteri (Osha), the roots of which are used in the traditional treatment of many diseases including gastric aches. However, its action has not been completely elucidated. We analyzed the contributions of hydrogen sulfide and S-nitrosothiols to the action of DLG. Animals were pretreated with freshly formed in vitro nitrosothiol using NaS and sodium nitroprusside to elucidate participation in the action of DLG. We also evaluated the production of HS in vivo and in real time on the stomach via a specific electrode introduced into the stomachs of anaesthetized animals pretreated with DLG. Treatment with 10 mg/kg DLG increases gastric HS production in vivo from 7.8 ± 0.81 ppm to 13.1 ± 3.01 ppm and prevents the decrease in gastric injury caused by absolute ethanol. In addition, it maintains endogenous concentrations of GSH and NO. Exogenous S-nitrosothiols protect the gastric mucosa from damage, suggesting that the action of DLG might be associated with S-nitrosothiol and HS formation.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s10787-017-0392-6 | DOI Listing |
J Ethnopharmacol
October 2024
State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy and Tianjin Key Laboratory of Molecular Drug Research, Nankai University, Tianjin, 300353, China. Electronic address:
Ethnopharmacological Relevance: The root of Polygonum cuspidatum Sieb. et Zucc (PC), known as 'Huzhang' in the Chinese Pharmacopoeia, has been traditionally employed for its anti-inflammatory, antiviral, antimicrobial, and other biological activities. Polydatin (PD) and its aglycone, resveratrol (RES), are key pharmacologically active components responsible for exerting anti-inflammatory and antioxidant effects.
View Article and Find Full Text PDFDrug Deliv Transl Res
January 2025
Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, 2800 Plymouth Rd., Ann Arbor, MI, 48109, USA.
Poly(lactide-co-glycolide) and poly(lactic-co-glycolic acids) (PLGAs) play a critical role in the development of commercial long-acting injectable microsphere formulations. However, very little information is available describing the impact of PLGA manufacturer and monomer distribution along the polymer chain (e.g.
View Article and Find Full Text PDFNat Commun
January 2024
Early Clinical Development, Oncology, Genentech, South San Francisco, CA, USA.
Approved antibody-drug conjugates (ADCs) for HER2-positive breast cancer include trastuzumab emtansine and trastuzumab deruxtecan. To develop a differentiated HER2 ADC, we chose an antibody that does not compete with trastuzumab or pertuzumab for binding, conjugated to a reduced potency PBD (pyrrolobenzodiazepine) dimer payload. PBDs are potent cytotoxic agents that alkylate and cross-link DNA.
View Article and Find Full Text PDFJ Eat Disord
December 2023
InsideOut Institute for Eating Disorders, Faculty of Medicine and Health, The University of Sydney and Sydney Local Health District, Sydney, Australia.
Two decades have elapsed since our publication of 'What kind of illness is anorexia nervosa?'. The question remains whether our understanding of anorexia nervosa and its treatment thereof has evolved over this time. The verdict is disappointing at best.
View Article and Find Full Text PDFDrug Deliv Transl Res
March 2024
Department of Pharmaceutical Sciences, The Biointerfaces Institute, University of Michigan, North Campus Research Complex, 2800 Plymouth Rd., Ann Arbor, MI, 48109, USA.
Remote loading microencapsulation of peptides into polymer microspheres without organic solvent represents a promising alternative to develop long-acting release depots relative to conventional encapsulation methods. Here, we formulated drug-free microspheres from two kinds of uncapped poly(lactide-co-glycolides) (PLGAs), i.e.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!