Three new N-alkylated amino acid derivatives, penichrysoamides A-C (1-3), along with a new citric acid derivative, penichrysoacid A (4), a new chromanone lactone penichrysoacid B (5), and a new amide derivative, penichrysoamide D (6), as well as seven known benzamide derivatives (7-13), were isolated from the endophytic fungus Penicillium chrysogenum derived from the insect Periplaneta americana. The structures of these compounds, including their absolute configurations, were elucidated using spectroscopic and computational techniques. Biological evaluation revealed that compounds 8-13 exhibited significant COX-2 inhibitory activity, with IC values ranging from 275 nM to 1350 nM.
View Article and Find Full Text PDFFollowing the publication of this paper, it was drawn to the Editor's attention by a concerned reader that certain of the Transwell invasion assay data shown in Figs. 2C and 4B were strikingly similar to data appearing in different form in a paper by different authors at a different research institute that had already been submitted for publication. Owing to the fact that the contentious data in the above article had already been submitted for publication prior to its submission to , the Editor has decided that this paper should be retracted from the Journal.
View Article and Find Full Text PDFB cell activating factor (BAFF) has been shown to play a key role in regulating B cell function, but little is known about whether BAFF affects the function of fibroblast-like synoviocyte (FLS), an effector cell of rheumatoid arthritis (RA). CP-25, a new ester derivative of paeoniflorin, could alleviate the arthritis symptoms of collagen-induced arthritis (CIA) mice by inhibiting BAFF-mediated abnormal activation of B cells. In this study, we aimed to understand the mechanism by which BAFF activates FLS and the effect of CP-25 on FLS function.
View Article and Find Full Text PDFJ Clin Endocrinol Metab
February 2023
Context: Glucocorticoids have potent effects on the central nervous system. However, while patients with Cushing syndrome frequently report impairments in cognitive function, studies investigating cognitive function in patients with autonomous cortisol secretion (ACS) in adrenal incidentalomas (AIs) are scarce.
Objective: The aim of the present study was to evaluate neurocognitive function in patients with ACS.
Celangulin V is a natural -dihydrofuran sesquiterpene polyester with anti activity and unique mechanism of action. Further study showed that its target was the H subunit of V-ATPase in the midgut of . Thus, combined with the previous work, thirty-two benzene sulfonamide derivatives were systematically synthesised to discover efficient and low-budget insecticidal candidates for the H subunit of V-ATPase.
View Article and Find Full Text PDFZhongguo Ying Yong Sheng Li Xue Za Zhi
September 2022
To study the mechanisms of cold exposure mediated ileum mechanical barrier injury in mice. Twenty mice were randomly divided into the control and cold exposure groups. Both the control and cold exposure groups were placed in the climate room with (24±2)℃ and 40% humidity.
View Article and Find Full Text PDFSci Total Environ
November 2022
Sixty-nine 4-propargyloxybenzene sulfonamide derivatives with different amino acids as amino substituent were synthesized and evaluated for their insecticidal activity against third-instar . The bioassay results revealed that some derivatives bearing amino acid ester group performed good insecticidal activity against third-instar , such as the LC values of and were 4.28 and 2.
View Article and Find Full Text PDFThis study aimed to explore the molecular mechanisms underlying the differential quality of tea made from leaves at different development stages. Fresh Camellia sinensis (L.) O.
View Article and Find Full Text PDFBackground: Bone loss and osteoporosis are commonly described as extra-intestinal manifestations of inflammatory bowel disease (IBD). Jianpi Qingchang Bushen decoction (JQBD) is a prescription used in clinical practice. However, further studies are needed to determine whether JQBD regulates the receptor activator of nuclear factor kappa B (NF-κB) (RANK)/receptor activator of NF-κB ligand (RANKL)/ osteoprotegerin (OPG) pathways and could play a role in treating IBD-induced bone loss.
View Article and Find Full Text PDFEvid Based Complement Alternat Med
February 2022
Background: Excessive endoplasmic reticulum (ER) stress in intestinal epithelial cells (IEC) may lead to impaired intestinal mucosal barrier function and then participate in the pathogenesis of ulcerative colitis (UC). Jianpi Qingchang decoction (JPQCD) has been shown to have protective effects on UC. However, further studies are needed to determine whether JPQCD regulates PERK/eIF2/ATF4/CHOP pathways to play a role in treating UC.
View Article and Find Full Text PDFAdsorption and coagulation were commonly used to alleviate reverse osmosis (RO) membrane fouling caused by dissolved organic matters (DOM), but the effects of changed composition and structure of DOM in dyeing wastewater after adsorption and coagulation on RO membrane fouling have seldom been studied. This study aimed at resolving the mechanism how the RO membrane fouling during dyeing wastewater treatment was alleviated by using adsorption and coagulation. The dyeing wastewater caused serious RO membrane fouling.
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